Equipment and method for producing xanthate and recovering carbon disulfide from production tail gas

A carbon disulfide and xanthate technology, applied in the directions of carbon disulfide, chemical instruments and methods, separation methods, etc., can solve the slow industrialization process of xanthate synthesis technology, the disjointed research and production of xanthate, and the inability to achieve very good results. transformation and other problems, to achieve the effect of improving the level of synthesis technology, good environmental protection effect and good production effect

Active Publication Date: 2017-03-29
SHAANXI HUAGUANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In view of the present situation of production and research of xanthate in my country, research on xanthate is mainly concentrated in universities and research institutes. The equipment in scientific research institutes is small in scale, does not have complete functions, and the equipment is relatively simple; large-scale xanthate production enterprises They also do not have research and development capabilities, and enterprises do not intervene as the main body of investment and research and development, resulting in a complete disjoint in the research and production of xanthate. slow

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  • Equipment and method for producing xanthate and recovering carbon disulfide from production tail gas

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Embodiment 1

[0057] Such as figure 1 As shown, the equipment for producing xanthate and recovering carbon disulfide from the production tail gas in this embodiment includes a reactor 1, a rake dryer 2 and a carbon disulfide recovery system 3;

[0058] The top of described reactor 1 is provided with alkali feed inlet, alcohol feed inlet and carbon disulfide feed inlet, and the bottom of described reactor 1 is provided with discharge port, and described alkali feed inlet passes pipeline and alkali storage tank 4 is communicated, the alcohol feed port is communicated with the alcohol storage tank 5 through the pipeline, and the carbon disulfide feed port is communicated with the carbon disulfide storage tank 6 through the pipeline;

[0059] One end of the rake dryer 2 is provided with a feed inlet, the other end is provided with a tail gas outlet, and the bottom of the rake dryer 2 is provided with a discharge port; the discharge port of the reaction kettle 1 is connected to the The feeding ...

Embodiment 2

[0070] combine figure 1 , the present embodiment utilizes equipment as described in embodiment 1 to produce xanthate and the method for reclaiming carbon disulfide from production tail gas comprises the following steps:

[0071] Step 1, synthesis: Alcohol, alkali and carbon disulfide are added into reaction kettle 1 in molar ratio alcohol: alkali: carbon disulfide=1:1.02:6, then alcohol, alkali and carbon disulfide are reacted at a temperature of 30° C. for 7 hours to obtain Slurry; The alkali is sodium hydroxide, and the alcohol is Virahol;

[0072] Step 2, drying: add the slurry described in step 1 into the rake dryer 2, and dry it for 4 hours at a temperature of 75°C and a vacuum of -0.05MPa to obtain xanthate and production tail gas; Said xanthate is discharged into the xanthate collection tank 8 through the outlet of the rake dryer 2, and said production tail gas is discharged into the carbon disulfide recovery system 3 through the tail gas outlet of the rake dryer 2;

...

Embodiment 3

[0093] combine figure 1 , the present embodiment utilizes equipment as described in embodiment 1 to produce xanthate and the method for reclaiming carbon disulfide from production tail gas comprises the following steps:

[0094] Step 1, synthesis: Alcohol: base: carbon disulfide=1:1:5, add alcohol, base and carbon disulfide to reactor 1 in molar ratio, then react alcohol, base and carbon disulfide at a temperature of 40°C for 5h to obtain Slurry; The alkali is potassium hydroxide, and the alcohol is n-butanol;

[0095] Step 2, drying: add the slurry described in step 1 into the rake dryer 2, and dry it for 8 hours at a temperature of 65°C and a vacuum of -0.08MPa to obtain xanthate and production tail gas; Said xanthate is discharged into the xanthate collection tank 8 through the outlet of the rake dryer 2, and the production tail gas is discharged into the carbon disulfide recovery system 3 through the tail gas outlet of the rake dryer 2;

[0096] Step 3: Recovery of carbo...

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Abstract

The invention provides equipment for producing xanthogenate and recovering carbon disulfide from production tail gas. The equipment comprises a reaction kettle, a harrow-type drier and a carbon disulfide recovery system, wherein an alkali feed inlet, an alcohol feed inlet and a carbon disulfide feed inlet are formed in the upper part of a reaction kettle; a discharge opening is formed in the lower part of the reaction kettle; and the carbon disulfide recovery system comprises a deduster, a primary condenser, a primary deep freezer, a secondary condenser, a secondary deep freezer and an absorption tower which are in sequential communication. The invention further provides a method for producing xanthogenate and recovering carbon disulfide from production tail gas by using the equipment. According to the equipment and method provided by the invention, the conversion ratio of raw materials is high, the occurrence rate of side reactions is less, and synthesis of xanthogenate is facilitated. The produced xanthogenate product is high in purity and high in recovery rate of carbon disulfide, and has a market prospect and popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of chemical mineral dressing agents, and in particular relates to a device and a method for producing xanthate and recovering carbon disulfide from production tail gas. Background technique [0002] Xanthate (ROCSSNa or ROCSSK) is currently the most widely used and consumed flotation collector in the field of chemical mineral processing agents. As a flotation collector for sulfide minerals, xanthate is widely used in metal sulfide mines to recover metal sulfide minerals. Due to its good collection performance and selectivity, low manufacturing cost and good stability, xanthate has become the most consumed sulfide ore flotation collector in the field of mineral processing. [0003] At present, the methods for industrial synthesis of xanthate are kneading method and wet alkali method. The kneading method is to add alcohol and carbon disulfide to the kneader, and then gradually add powder alkali (sodium hydro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J19/18B01J4/00B01D53/00B01D53/02B01D45/02C01B32/72C07C329/14
Inventor 孙胜奇冯卫国宋江吴庆伟任博刘卫峰刘明亮张金磊
Owner SHAANXI HUAGUANG IND
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